cont-flood-poc

PoC for CVE-2023-45288 This is a proof-of-concept code for the CONTINUATION flood vulnerability found and documented by Bartek Nowotarski. The technical details are very well documented in his blog post here. While my focus was on the Go bug as documented by the researcher, this code should be...

CVE-2024-27983-nodejs-http2

This repository builds up a vulnerable HTTP2 Node.js server server-nossl.js based on CVE-2024-27983 which exploits a continuation flood vulnerability in HTTP2 servers. Notes: server.js is found not vulnerable due to the use of SSL certificates. server-nossl.js is vulnerable to the continuation...

Security Bulletin: Multiple vulnerabilities in third-party Netty libraries affect the IBM Informix Wire Listener.

Summary Multiple vulnerabilities in Netty affect the IBM Informix Wire Listener. IBM Informix has addressed these vulnerabilities by updating the Netty components to their latest versions. Vulnerability Details CVEID:CVE-2026-33871 DESCRIPTION: Netty is an asynchronous, event-driven network...

EUVD-2026-33940

mint: Unbounded CONTINUATION/HEADERS frame accumulation CONTINUATION flood...

CVE-2026-49754

The CVE-2026-49754 entry describes a memory exhaustion vulnerability in elixir-mint Mint’s HTTP/2 receive path. When a HEADERS frame arrives without END_HEADERS, the unparsed header-block is queued and each subsequent CONTINUATION frame on that stream appends to the accumulator with no cap. There...

CVE-2026-49754 HTTP/2 CONTINUATION flood in Mint client via unbounded header-block accumulation

Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint Mint allows attacker-controlled HTTP/2 servers to exhaust memory in a Mint client HTTP/2 CONTINUATION flood. When Mint's HTTP/2 receive path observes a HEADERS frame without the ENDHEADERS flag, the unparsed...

CVE-2026-33871 Netty HTTP/2 CONTINUATION Frame Flood DoS via Zero-Byte Frame Bypass

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service DoS against a Netty HTTP/2 server by sending a flood of CONTINUATION frames. The server's lack of a limit on the number of...

Mitigate Http/2 continuations with Imperva WAF

As the threat landscape continues to grow, with new breaches being announced every day, Imperva continues to stay one step ahead of attackers. HTTP/2 exploits seem to be growing every quarter as more attackers use this vulnerability in new ways. We previously wrote about how Imperva protected its...

Exploit for CVE-2024-27983

This repository builds up a vulnerable HTTP2 Node.js server se...

Exploit for CVE-2023-45288

PoC for CVE-2023-45288 This is a proof-of-concept code for th...

CVE-2023-45288

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GHSA-Q6CP-QFWQ-4GCV h2 servers vulnerable to degradation of service with CONTINUATION Flood

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage. Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency. Mo...

h2 servers vulnerable to degradation of service with CONTINUATION Flood

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage. Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency. Mo...

HTTP/2 CONTINUATION Flood Vulnerability

HTTP/2, a widely adopted web communication protocol, organizes data transmission through a binary framing layer, wherein all communication is divided into smaller messages called frames, each identified by a specific type, such as headers, data, and continuation frames. HTTP/2 HEADER frames...

Degradation of service in h2 servers with CONTINUATION Flood

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage. Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency. Mo...

RUSTSEC-2024-0332 Degradation of service in h2 servers with CONTINUATION Flood

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage. Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency. Mo...

PT-2024-2652 · Envoy +1 · Envoy +1

Name of the Vulnerable Software and Affected Versions: Envoy versions 1.29.0 through 1.29.1 Description: The issue is related to the Envoy HTTP/2 protocol stack, which is vulnerable to a flood of CONTINUATION frames. This occurs because Envoy's HTTP/2 codec does not reset a request when header ma...

PT-2024-2651 · Envoy · Envoy

Name of the Vulnerable Software and Affected Versions: Envoy versions prior to 1.29.3 Envoy versions prior to 1.28.2 Envoy versions prior to 1.27.4 Envoy versions prior to 1.26.8 Description: The HTTP/2 protocol stack in Envoy is vulnerable to CPU exhaustion due to a flood of CONTINUATION frames...